Eaton N48M28B22CU K-Factor nonlinear transformer UL Listed
Part Number: N48M28B22CU
Quick Summary
Eaton N48M28B22CU K-Factor nonlinear transformer provides robust three-phase voltage transformation for large industrial facilities. Many sites struggle with voltage fluctuations and startup surges that stress equipment and disrupt production. UL Listed certification reinforces safety and compliance, while the K-13 design and copper windings optimize cooling and performance. In addition, the WS35 weather shield and ventilated frame support reliable operation in harsh environments, reducing maintenance costs and downtime. With a 225 kVA rating and a 480 V primary feeding 208Y/120 V secondary, it supports critical loads across manufacturing lines and data centers. The device offers selectable taps and a copper-wound coil for enhanced efficiency, straightforward installation, and long service life in demanding industrial settings.
Product Information
Extended Description
N48M28B22CU Eaton: K-Factor Non Linear Transformer, Ventilated, K-13, Three-phase, PV: 480V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 208Y/120V, 80°C, 225 kVA , Cu windings, Elec. Shield, Frame: 919, uses WS35
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28B22CU
UPC
786680105814
Product Length/Depth
36.23 in
Product Height
75 in
Product Width
44.2 in
Product Weight
4091 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
UL Listed
Coil material
Copper
Type
Ventilated transformer
Design
K-13
Frame
919
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Kva Rating
225 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Temperature rise
80 °C rise
Special features
Electrostatically Shielded
Weathershield
WS35
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M28B22CU
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: K-Factor nonlinear ventilated design. Business Impact: Improves surge tolerance and protects connected equipment from voltage transients. Application: Ideal for data centers and manufacturing lines where voltage events threaten uptime. Feature: Copper windings with electrostatic shield. Business Impact: Enhances electrical conductivity and EMI control, improving overall efficiency. Application: Suitable for high-demand panels and motor drives. Feature: Tap changers 2 at +2.5% FCAN and 4 at -2.5% FCBN. Business Impact: Provides voltage regulation to match load conditions, reducing stress on downstream equipment. Application: Useful in facilities with variable loading or long feeders. Feature: Frame 919 with WS35 Weathershield. Business Impact: Enables durable, weather-resistant installation in harsh environments. Application: Outdoor or sheltered installations in plants and distribution rooms. Feature: 60 Hz, three-phase, 225 kVA rating. Business Impact: Reliable power distribution for large loads while maintaining consistent voltage profiles. Application: Suitable for power distribution cabinets and industrial feeders. Feature: Copper windings and 80 °C rise specification. Business Impact: Improves thermal performance and longevity under continuous operation. Application: Heavy-duty industrial deployments with elevated ambient temperatures. Feature: Documentation and warranty alignment. Business Impact: Supports procurement and maintenance planning with clear service terms. Application: Streamlines qualification, spares strategy, and lifecycle cost management.
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FAQs
The N48M28B22CU is designed for 480 V primary, three-phase systems with a 208Y/120 V secondary and 60 Hz operation. It uses copper windings, an electrostatic shield, and a frame 919 enclosure with WS35 weather protection. Ensure proper mounting clearance and enclosure compatibility per Eaton’s installation guidelines.
Key specs include a 225 kVA rating, 480 V primary, 208Y/120 V secondary, 60 Hz operation, and an 80 °C rise. It features a K-Factor nonlinear design, copper windings, an electrostatic shield, frame 919 construction, and taps at +2.5% FCAN and -2.5% FCBN to accommodate voltage variations in service feeders.
Yes, the transformer is UL Listed, supporting safety and compliance in typical industrial installations. The data sheet does not list CE or IP certifications, so verify site-specific regulatory requirements and ensure compatibility with local electrical codes and your procurement standards before deployment.
WS35 provides weather protection for outdoor or exposed installations, while the ventilated frame aids cooling. Combined with copper windings and a robust frame, this configuration supports stable operation under elevated ambient conditions, reducing maintenance intervals and improving uptime in demanding industrial settings.
Warranty follows Eaton Selling Policy 25-000: one year from the date of installation or eighteen months from shipment, whichever occurs first. For maintenance planning, leverage the copper windings and shielding to minimize wear, and align with your spare parts strategy to maximize uptime and return on investment.